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Oil gauge takes a few sec to pressurize after ignition is this bad?

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Old 07-26-2007, 12:22 AM
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Originally Posted by whiskeyrichard
My oil pressure gauge goes up with the key just turned to the on position....the truck does not have to be started.

This has always seemed odd to me.

WR

Mine does that too. I thought about getting a new sender but at almost $300 for one i'd hate to replace it and have it not fix the problem
Old 07-26-2007, 08:34 AM
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According to the service manual it is perfectly normal.
Old 07-31-2007, 07:59 PM
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My truck used to show pressure with they key on - engine off. That is the symptom of a bad pressure sending unit. I replaced mine, now there is no pressure shown until after the engine is started. The needle always went to the same location (high in the operating band) and never moved. Tha was my first clue that things were not right.
The correct part number for 24V engines to early 2001 is 4088390. It cost me a whopping $87 from cumminstuff. They are located in Granbury TX, but I am sure that they ship.

Dry Creek
Old 08-01-2007, 09:07 PM
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My 98.5 shows pressure after 4-5 seconds, and sometimes the dinger will ding, but not always. I did some reading, and it is because the oil pressure sending unit is located high on the engine and it takes a bit before it sees pressure.
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